423.The Indian soils are generally deficient in
(a) Ammonium
(b) Calcium
(c) Nitrogen
(d) Phosphorus
424.Deficiency of which of the following leads to an attack of diabetes ?
(a) Insulin
(b) Enzymes
(c) Vitamins
(d) None of these
425.A single fixed pulley is used to
(a) Save work to be done by a man
(b) Raise a large load with a small effort
(c) Change the direction of application of the effort
(d) Produce an output greater than the input
426.The most abundant organic compound found in the nature is
(a) Fructose
(b) Cellulose
(c) Glucose
(d) Starch
427.In the photosynthesis of plants, oxygen is liberated from
(a) Water
(b) Cellulose
(c) Carbon dioxide
(d) Light
428. Amnesia refers to the loss of
(a) Appetite
(b) Sight
(c) Memory
(d) The sense of touch
429. Iodized salt is taken by persons living in sub-Himalayan region to prevent and control
(a) Goitre
(b) Elephantisis
(c) Skin disease
(d) Worms in stomach
430. A racing car remains stable even when taking a sharp turn at high speed because
(a) Its centre of gravity is high
(b) Its centre of gravity is low
(c) It has a streamlined body
(d) It is made of light weight materials
431. Aspirin is a derivative of
(a) Nitric acid
(b) Benzoic acid
(c) Phenol
(d) Salicylic acid
432. Gregor Johann Mendel did hybridization studies on
(a) Garden peas
(b) Roses
(c) Beans
(d) None of these